1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
yulyashka [42]
3 years ago
12

How could you prove that

Physics
1 answer:
Lubov Fominskaja [6]3 years ago
5 0

Answer:

An unconformity shows where some rock layers have been lost because of erosion. To date rock layers, geologists first give a relative age to a layer of rock at one location and then give the same age to matching layers at other locations. Certain fossils, called index fossils, help geologists match rock layers.

Explanation:

You might be interested in
How long Tina, a ballerina, in the air when she leaps straight up with a speed of 1.8 m/s?
Tems11 [23]

The acceleration of gravity on or near the surface of the Earth is 9.8 m/s².
Anything acted on only by gravity loses 9.8 m/s of upward speed, or gains
9.8 m/s of downward speed, every second.

Leaping straight upward at 1.8 m/s, Tina keeps rising until she runs out of
upward speed.  That happens in (1.8/9.8) = 0.1837 second after the leap.

After that, Finkel's First Law of Motion takes over:
"What goes up must come down."

The dropping part of the leap is symmetrical with the first.  Please don't
make me go through proving it.  Tina hits the floor at the same speed of
1.8 m/s with which she left it, and it takes the same amount of time to drop
from the peak to the floor as it took to rise from the floor to the peak.

So her total time out of contact with the floor is

                     2 x (0.1837 sec)  =  0.367 second  (rounded)

3 0
3 years ago
Find the heat energy is required to change 2Kg of ice at 0 C to water at 20 C ( specific latent heat of fusion of water = 336000
katrin2010 [14]

We want to find the energy that we need to transform 2kg of ice at 0°C to water at 20°C.

We will find that we must give 840,000 Joules.

First, we must change of phase from ice to water.

We use the specific latent heat of fusion to do this, this quantity tells us the amount of energy that we need to transform 1 kg of ice into water.

So we need 336,000 J of energy to transform 1kg of ice into water, and there are 2kg of ice, then we need twice that amount of energy:

2*336,000 J = 672,000 J

Now we have 2kg of water at 0°C, and we need to increase its temperature to 20°C.

Here we use the specific heat, it tell us the amount of energy that we need to increase the temperature per mass of water by 1°C.

We know that:

specific heat of capacity of water = 4200 J/kg°C

This means that we need to give 4,200 Joules of energy to increase the temperature by 1°C of 1kg of water.

Then to increase 1°C of 2kg of water we need twice that amount:

2*4,200 J = 8,400 J

And that is for 1°C, we need to give that amount 20 times (to increase 20°C) this is:

20*8,400 J = 168,000 J

Then the total amount of energy that we must give is:

E = 672,000 J + 168,000 J = 840,000 J

If you want to learn more, you can read:

brainly.com/question/12474790

5 0
3 years ago
Need help asap I am confused and this is making my brain hurt
ICE Princess25 [194]

Answer: The answer is D.

Explanation: Momentum can be defined as mass in motion. All objects have mass so if an object is moving, then it has momentum it has its mass in motion. Momentum depends upon the variables mass and velocity. In terms of an equation, the momentum of an object is equal to the mass of the object times the velocity of the object.

3 0
3 years ago
What percentage of energy can be transformed when an energy transformation from potential to kinetic occurs?
GREYUIT [131]

Answer:

100%

Explanation:

i did the same question

7 0
3 years ago
A jet moving at 500.0 km/ h due is in a region where the wind is moving at 120.0 km/h in a direction 30.00° north of east. What
WARRIOR [948]

Answer:

The speed of the aircraft relative to the ground is 606.9 m/s^2

Explanation:

x-y coordinate system:  

x is Positive due East direction. Similarly  y is Positive due North Direction.

Now let us Decompose each vector into x-y

500 km/h due east = (500, 0)

120 km/h at 30 degree north of east

= (120 cos(30), 120 \times sin(30))

= (120 \times \frac{\sqrt{(3)}}{2}, 120 \times \frac{1}{ 2})

= (60 \times \sqrt(3), 60)

Adding  the vectors.

=(500, 0) + (60 \times \sqrt{3}, 60)

=(500 + 60 \times \sqrt(3), 60)

=(500 + 60 \times 1.73, 60)

=(500 +103.8, 60)

= (603.8, 60)

Returning back to polar form

Magnitude = \sqrt{603.923^2 + 60^2} = 606.9

7 0
3 years ago
Other questions:
  • What is playing catch? ( in terms of the force of the air interacting with ball )
    11·1 answer
  • The idealized body that emits the maximum amount of radiation at a given temperature and absorbs all the radiation incident on i
    7·1 answer
  • Justify why sound waves need a medium to propagate with example??
    7·1 answer
  • Mike is standing on the roof of a building looking at the roof of the neighboring building that is 15 meters away and 10 meters
    10·1 answer
  • If a 80kg diver jumps off of a 5 m high dive into a regulation diving pool, how much should the temperature of the pool go up?
    14·1 answer
  • What is one exsample of a closed economy​
    5·2 answers
  • Which instrument would make rice vibrate easier, a tuba or a flute? Explain why. Hint: think about the difference between high a
    11·1 answer
  • Someone help me! you get 27 points if you get it right
    14·1 answer
  • Which is an example of current electricity?
    11·1 answer
  • A ride at an amusement park attaches people to a bungee cord, pulls them
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!